147 lines
3.3 KiB
C
147 lines
3.3 KiB
C
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// execution.h - Execution engines. -*- c++ -*-
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/* Copyright (C) 2004 Free Software Foundation
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This file is part of libgcj.
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This software is copyrighted work licensed under the terms of the
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Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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details. */
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#ifndef __JAVA_EXECUTION_H__
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#define __JAVA_EXECUTION_H__
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// This represents one execution engine. Note that we use function
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// pointers and not virtual methods to avoid calls to
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// __cxa_call_unexpected and the like.
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struct _Jv_ExecutionEngine
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{
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public:
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void (*unregister) (jclass);
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// FIXME: probably should handle this elsewhere, see how
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// interpreter does it.
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bool (*need_resolve_string_fields) ();
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void (*verify) (jclass);
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void (*allocate_static_fields) (jclass, int);
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void (*create_ncode) (jclass);
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_Jv_ResolvedMethod *(*resolve_method) (_Jv_Method *, jclass,
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jboolean, jint);
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void (*post_miranda_hook) (jclass);
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};
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// This handles all gcj-compiled code, including BC ABI.
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struct _Jv_CompiledEngine : public _Jv_ExecutionEngine
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{
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public:
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static void do_unregister (jclass)
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{
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}
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static bool do_need_resolve_string_fields ()
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{
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return true;
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}
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static void do_verify (jclass klass)
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{
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_Jv_Linker::verify_type_assertions (klass);
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}
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static _Jv_ResolvedMethod *do_resolve_method (_Jv_Method *, jclass,
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jboolean, jint)
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{
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return NULL;
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}
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static void do_allocate_static_fields (jclass, int)
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{
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// Compiled classes don't need this.
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}
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static void do_create_ncode (jclass)
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{
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// Not needed.
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}
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static void do_post_miranda_hook (jclass)
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{
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// Not needed.
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}
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_Jv_CompiledEngine ()
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{
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unregister = do_unregister;
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need_resolve_string_fields = do_need_resolve_string_fields;
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verify = do_verify;
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allocate_static_fields = do_allocate_static_fields;
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create_ncode = do_create_ncode;
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resolve_method = do_resolve_method;
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post_miranda_hook = do_post_miranda_hook;
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}
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// These operators make it so we don't have to link in libstdc++.
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void *operator new (size_t bytes)
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{
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return _Jv_Malloc(bytes);
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}
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void operator delete (void *mem)
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{
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_Jv_Free(mem);
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}
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};
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// This handles interpreted code.
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class _Jv_InterpreterEngine : public _Jv_ExecutionEngine
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{
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public:
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static void do_verify (jclass);
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static void do_allocate_static_fields (jclass, int);
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static void do_create_ncode (jclass);
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static _Jv_ResolvedMethod *do_resolve_method (_Jv_Method *, jclass,
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jboolean, jint);
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static bool do_need_resolve_string_fields ()
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{
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return false;
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}
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static void do_unregister(jclass klass)
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{
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_Jv_UnregisterClass(klass);
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}
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static void do_post_miranda_hook (jclass);
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_Jv_InterpreterEngine ()
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{
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unregister = do_unregister;
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need_resolve_string_fields = do_need_resolve_string_fields;
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verify = do_verify;
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allocate_static_fields = do_allocate_static_fields;
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create_ncode = do_create_ncode;
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resolve_method = do_resolve_method;
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post_miranda_hook = do_post_miranda_hook;
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}
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// These operators make it so we don't have to link in libstdc++.
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void *operator new (size_t bytes)
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{
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return _Jv_Malloc(bytes);
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}
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void operator delete (void *mem)
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{
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_Jv_Free(mem);
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}
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};
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extern _Jv_InterpreterEngine _Jv_soleInterpreterEngine;
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extern _Jv_CompiledEngine _Jv_soleCompiledEngine;
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#endif // __JAVA_EXECUTION_H__
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